EP 2414583 A1 20120208 - METHOD AND DEVICE FOR THE MANUFACTURE OF A STEEL STRAND HAVING A THREE-LAYER STRUCTURE
Title (en)
METHOD AND DEVICE FOR THE MANUFACTURE OF A STEEL STRAND HAVING A THREE-LAYER STRUCTURE
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINER DREILAGIGEN STAHLLITZE
Title (fr)
PROCEDE ET DISPOSITIF DE FABRICATION D'UN CABLE A TROIS COUCHES
Publication
Application
Priority
- EP 2010054063 W 20100329
- FR 0952020 A 20090331
Abstract (en)
[origin: WO2010112445A1] The invention relates to a method for producing a metal cord having three concentric layers (C1, C2, C3), of the type that is rubberized in situ, i.e. including a composition comprising rubber in the non-crosslinked state, known as "filling rubber". The cord comprises a first inner layer or core (C1), around which N strands of diameter d2 are wound together in the form of a helix with a pitch p2 to form an intermediate layer (C2), N varying between 3 and 12. In addition, P strands of diameter d3 are wound together around this second layer in the form of a helix with a pitch p3 to form a third outer layer (C3), P varying between 8 and 20. The method includes the following steps: a first step in which the core (C1) is coated with the filling rubber; a first step in which the N strands of the second layer (C2) are assembled and twisted around the thus coated core (C1), so as to form an intermediate cord, known as the "core strand" (C1+C2), at a point known as the "assembly point"; downstream from said assembly point, a second step in which the core strand (C1+C2) is coated with the filling rubber; a second step in which the P strands of the third layer (C3) are assembled and twisted around the thus coated core strand (C1+C2); and a final twist value balancing step. The invention also relates to the device used to implement one such method.
IPC 8 full level
D07B 1/06 (2006.01); D07B 1/16 (2006.01); D07B 3/08 (2006.01); D07B 5/12 (2006.01); D07B 7/14 (2006.01)
CPC (source: EP US)
D07B 1/0633 (2013.01 - EP US); D07B 5/12 (2013.01 - EP US); D07B 7/145 (2013.01 - EP US); D07B 2201/2023 (2013.01 - EP US); D07B 2201/2025 (2013.01 - EP US); D07B 2201/2028 (2013.01 - EP US); D07B 2201/2032 (2013.01 - EP US); D07B 2201/204 (2013.01 - EP US); D07B 2201/2046 (2013.01 - EP US); D07B 2201/2062 (2013.01 - EP US); D07B 2201/2065 (2013.01 - EP US); D07B 2201/2081 (2013.01 - EP US); D07B 2207/205 (2013.01 - EP US); D07B 2207/4072 (2013.01 - EP US); D07B 2401/2025 (2013.01 - EP US); D07B 2401/208 (2013.01 - EP US); D07B 2501/2046 (2013.01 - EP US)
Citation (search report)
See references of WO 2010112445A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
FR 2943691 A1 20101001; FR 2943691 B1 20110819; CN 102365404 A 20120229; CN 102365404 B 20150429; EP 2414583 A1 20120208; EP 2414583 B1 20150318; JP 2012522144 A 20120920; JP 5591909 B2 20140917; US 2012102909 A1 20120503; US 8720176 B2 20140513; WO 2010112445 A1 20101007
DOCDB simple family (application)
FR 0952020 A 20090331; CN 201080014110 A 20100329; EP 10711226 A 20100329; EP 2010054063 W 20100329; JP 2012502612 A 20100329; US 201013260977 A 20100329